diff --git a/libcharset/lib/ChangeLog b/libcharset/lib/ChangeLog
index 17eb41b..5eb2b57 100644
--- a/libcharset/lib/ChangeLog
+++ b/libcharset/lib/ChangeLog
@@ -1,3 +1,8 @@
+2001-06-27  Bruno Haible  <haible@clisp.cons.org>
+
+	* Makefile.in (clean): Remove also *.o.lock, left there by libtool
+	on IRIX.
+
 2001-06-25  Bruno Haible  <haible@clisp.cons.org>
 
 	* Makefile.in (localcharset.lo): Mention $(INCLUDES) before $(CFLAGS)
diff --git a/libcharset/lib/Makefile.in b/libcharset/lib/Makefile.in
index f6ce345..1b029e0 100644
--- a/libcharset/lib/Makefile.in
+++ b/libcharset/lib/Makefile.in
@@ -120,7 +120,7 @@
 mostlyclean : clean
 
 clean : force
-	$(RM) *.o *.lo *.a *.la core charset.alias ref-add.sed ref-del.sed
+	$(RM) *.o *.lo *.a *.la *.o.lock core charset.alias ref-add.sed ref-del.sed
 	$(RM) -r .libs _libs
 
 distclean : clean